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Down arrow Cat-eLog Data Sheet
Scientific Name Sorubim trigonocephalus  Miranda Ribeiro, 1920
Common Name
Type Locality Arinos River, downstream from the mouth of Preto River, Juruena drainage, Tapajós basin, Porto Velho, Diamantino, Mato Grosso, Brazil, 14°05'32.25"S, 56°19'26.44"W.
Pronunciation sarw oo bim - tri gon oh cef al us.
Etymology Sorubi is the Brazilian local name for this fish (and several other pimelodids), latinised to become Sorubim. This specific epithet refers to its triangular-shaped (trigono=three-sided) head (cephalus=head).
Down arrow Species Information
Size 507mm or 20" SL. Find near, nearer or same sized spp.
Identification No other pimelodid genus possesses a dark horizontal stripe stretching entire length of head and body.
General Remarks Sorubim trigonocephalus was described in 1920 by Alípio de Miranda Ribeiro, based on a single specimen collected in a locality identified as “Porto Velho”. However, in their 2016 paper, O'Hara & Neuhaus correct a nearly century old confusion and determine the type locality of this species in the Arinos River in the Tapajós basin and extend it's range to include the Xingu.
Down arrow Habitat Information
Distribution South America: Madeira and Tapajós River basins, two Amazon tributaries.
Amazon, Lower Amazon, Tapajós (click on these areas to find other species found there)
Amazon, Middle Amazon (Solimoes), Madeira (click on these areas to find other species found there)
Amazon, Lower Amazon, Xingu (click on these areas to find other species found there)

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IUCN Red List Category Not Evaluated
Down arrow Husbandry Information
Breeding Unreported in the aquarium.
Breeding Reports There is no breeding report.
Down arrow Further Information
Reference Peixes (excl. Characinidae) No. 58 (Annexo 5), pp 12, Unnum. Pls. 10-11.
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Last Update 2020 Oct 03 08:45 (species record created: 2007 Apr 20 09:39)